In a computing system a method for performing a multiplication of a first multiplicand and a second multiplicand is presented. The computing system includes a plurality of registers, an instruction decoder, an arithmetic logic unit, and a preshifter. The first multiplicand is divided into a plurality...http://www.google.com.tw/patents/US4947364?utm_source=gb-gplus-share專利 US4947364 - Method in a computing system for performing a multiplication